A, B = map(int, input().split())
minus = False
if A*B < 0:
    minus = True

A = abs(A)
B = abs(B)

def check(n):

    if n == 0:
        return False

    l = len(str(n))
    cnt = 0
    while n%10 == 0:
        n //= 10
        cnt += 1
    return cnt >= 2 and cnt == l - 1

# 暗算する場合
if check(A) and check(B):
    ans = A*B
    ans //= 10
    if minus:
        ans *= -1

# 電卓使う
else:
    ans = A*B
    if minus:
        ans *= -1
    if not -99999999 <= ans <= 99999999:
        ans = 'E'

print(ans)